Longicornia Malay ana. 21 



bituberculato. Elylra oblonga, interrupte carinata, apice 

 truncata. Femora modice clavata. Tarsi postici et iiiter- 

 medii aequales, subelongati, articulis tiibus ultimis simul 

 triangularibus. 

 A very distinct genus, distinguished from the rest of its sub- 

 family, in the present collection by the bituberculate disc of the 

 prothorax, and by the rough and interrupted ridges of the elytra, 



Olmotega cinerascens. (PI. I. fig. 5.) 



O. tenuiter cinerascente-pubescens ; tibiis infra tarsisque 

 nigris. 



Hab. — Kaioa. 



Covered with a thin ashy pubescence ; head coarsely punctured 

 in front, the vertex slightly rising behind ; prothorax broader 

 than the head, with a somewhat rounded outline, coarsely 

 punctured, the two discal tubercles nearly in the middle, the 

 lateral spine very small, but distinct ; scutellum rounded behind ; 

 elytra irregularly seriate-punctate, three interrupted ridges on 

 each, the inner raised into a tritubercular crest at the base, 

 re-appearing behind the middle, the second commencing at the 

 shoulder, terminating gradually at about the middle, the outer at 

 the side, more produced towards the apex; body beneath dull 

 ashy ; legs ashy, the tips of the tibiae and the tarsi black ; 

 antennae about a third longer than the body, luteous, with a thin 

 ashy pile, the distal joints darker at the tips. 



Length 4 lines. 



Phyxium. 



Caput parvum, vertice elevatum, tuberibus antenniferis robustis. 



OcuU majusculi, in vertice subapproximati. Antennce 



setaceae, vix ciliatae ; scapo subelongato ; articulo tertio 



longiore, caeteris gradatim decrescentibus. Prothorax trans- 



versus, lateribus basin versus fortiter spinosus. Elytra lata, 



pone humeros constricta, lateribus angulata vel subito 



deflexa, basi carinata, apice rotundata. Femora brevia, 



fortiter clavata. Tarsi antici articulis transversis, intermedii 



et postici (ultimo excepto) subaequales. Prosternum tri- 



angulare, postice subelevatum. 



This is a remarkable genus, resembling the Brazilian Ony- 



chocerus in outline. In the irregular surface of the prothorax and 



elytra it approaches Olmotega, but is otherwise very distinct. 



There are three well-marked species ; in these the pubescence is 



